Film cartridge container accessory



FIG. 1 is a top and left-front perspective view of a film cartridge container accessory showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof.

The broken line showing of a camera in FIGS. 4, 5 and 7 are environmental only and form no part of the claimed design. 

The ornamental design for a film cartridge container accessory, substantially as shown and described. 